Machine for coiling metal spirals



' W. A. ZEIDLER.

MACHINE FOR COILING METAL SPIRALS.

APPLICATION FILED APR. 24, 1918.

Patented Mar. 7 1922 3SHEETS-SHEET1- uluuun g i il fiupw W. A. ZEIDLER.

MACHINE FOR comma METAL SPIRALS.

APFUCATION FILED APR. 24 1918.

1,408,676. Patentd Mar. 7, 1922.

3 SHEETS SHEET 2.

w. A. ZIEIDLER.

MACHINE FOR COILING- METAL SPIRALS.

APPLICATION FILED APR. 24, 19 18.

1,408,676. Patented Mar- 7, 1922.

3 SHEETS-SHEET 3.

ATTORNEY UNITED STATES PATENT OFFICE.

iVILLIAllI A. ZEIDLER, OF NEW YORK, N. Y.

Application filed April 24, 1918.

T all whom it may concern:

Be it known that I, lViLL'Liii ii. Znionnn, a citizen of the United States, residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in -ldachines for Coiling Metal Spirals, of which the following is a specification.

This invention relates to the manufacture of spirals for explosive shells. These spirals consist each of a closely coiled thin flexible strip of brass or the like, having a thickened or doubled or otherwise weighted outer end, which holds the detonating pin of the shell in inoperative position until the shell is fired and then unwinds, under centrifugal force due to the rotation of the shell during its flight, to release the detonating pin.

The objects of my invention are to provide simple, practical and easily operated mechanism for rapidly and accurately forming uniform, closely coiled spirals. These coiled spi 'als form the subject matter of my co-pending application Serialhliunber 230,-

7 &5 filed April2 l, 1918.

Accordingly, my invention comprises an arbor for taking the inner end of a spiral strip and a tubular guard about the arbor for holding the outer end of the spiral, the two being relatively rotatable to coil the strip upon the arbor. Mechanical means are provided for turning the rotatable part,

and manually operable means are provided for giving a final turn for the purpose of giving'a final set 'to the closely coiled spiral. The guard is preferably utilized also for stripping the completed spirals off the arbor and a coiling guide is preferably provided which may be swung out of the way when the spirals are being removed.

Other features of the invention will appear as the specification proceeds.

In the accompanying drawings 1 have illustrated the invention embodied in practical commercial form but would have it understood. that changes and modifications may be made without departing. from the true scope of the invention.

Figure 1 is a plan view of the machine; Figure 2 is a front elevation of the same; Figures 3 and 4t. are left and right hand end views respectively of the machine; Figure 5 is a sectional view taken substantially on the plane of line 5--5 olt Figure 9, show- Specification of Letters Patent.

Patented Mar. '7, 1922. Serial No. 230,544.

ing a form of one-way connection between the treadle-operated pulley and drive shaft; Figures 6 and 7 are detail sectional views on substantially the planes of lines 6-6 and 7-7 of Figure 2; Figure 8 is a detail view showing a spiral wound on the end of the arbor; Figures 9 and 10 are enlarged de tailed views showing the sleeve in its spiral forming and spiral stripping positions respectively and Figure 11 is an enlarged detailed View looking into the open end of the guard and showing the spiral formed therein.

The arbor or mandrel. on which the spiral is wound is designated'll), and is shown provided with a slot 11 in the end thereof, forming a lreyway to take the bent inner end of the spiral (see Figure l). The tubular guard is designated 12, the same being shown as sligl'itly inset from the end of the mandrel and surrounding the slotted end thereof. The guard is open at the front side of the machine for the passage of the spiral strip and carries an abutment 13 for engagement by a stop shoulder on the outer end of the spiral. The guard furthermore, is shown carried by a sleeve 14, slidably engaged overthe arbor so that it may be shifted longitudinally to strip the completed spiral off the end of the arbor, said sleeve being shifted by a suitable hand lever 15, but being normally held in retracted position by a returning spring 16.

'lhe coiling action is controlled bya guide having a presser portion '17 for hearing on the side of the coil and an angular end flange 18 overlying the end of the mandrel to hold the end. oft-he coil in shape. This guide is shown pivoted at 1.9 and counterweighted at 20 so as to normally stand up in operative position, a handle 21 being provided by which it can be rocked to swing the guide out of operative position.

The mandrel shaft is operated from a drive shaft 22, by gearing comprising a spur gear 23 on the drive shaft engaging a smaller gear 24- on the mandrel shaft, the two shafts being journaled in a suitable base or frame 25;

lhe drive shaft is operated by a combinationof treadle and counterweight, consisting of a treadle 26 connected by a strap 27 with one side of a double pulley 28 which is looselyengaged on the shaft, the other side of the double pulley having a strap 29 passed therearound in the reverse direction and connected. to acounterweight 30, and the pulley having a one-way driving engagement with the shaft by means of a pivoted spring-actuated pawl 31, engaging a ratchet 32 fast on the shaft. The two straps are passed over the pulley in reverse directions and, in conjunctionwith the one-way connection, are arranged so that upon depresslon of the treadle the pulley will rotate idly on the shaft and. upon release of the treadle the counterweight will impart positive rotation to the shaft.

In operation, the treadle is depressed and energy thereby stored by the lifting of the weight. The inner end of the strip from which the spiral is formed is then passed through the open side of the guard and hooked in the slot in the arbor. Pressure being removed from the treadle, the weight is released, and through the connections described drives the arbor, winding the -strlp engaged therewith uniformly in a compact mass within the tubular guard. During this winding action an even pressure is extended on the face of the coil by the presser portion 17 of the coiling guide and the edge of the strip is guided by the angularend flange 18 of the guide. l/Vhen the strip is completely coiled by reason of the combined stop and weight on the outer end of the strip bringing up against the stop or abutment 13 on the guard, the arbor then maybe glven a slight further turn for the purpose of setting the coils and putting them under a certain tension, by means of a hand wheel 33, fast on the mandrel shaft. This hand wheel also may be used as a means for holding the spiral in closely coiled form while a wire or binder is being slipped over the spiral to keep it in shape. After this binder is applied the coiling guide is rocked away from the end of the mandrel and the guard is then shifted longitudinally to strip the completed spiral oli'the end of the mandrel;

The m achine is a simple one to operate and enables the production of spirals uniform in character. Accuracy and uniformity of character is aided by the utilization of a weight as power for the winding, the same serving to put practically an even tension on all the coils of the spiral.

I claim: I

1. A spiral windingmachine, comprising an arbor for taking the inner end of a spiral and an abutment for holding the outerend of the spiral, mechanical means for relatively rotating one of said parts in respect to the other to thereby coil the spiral upon the arbor and manually operable means for sequentially rotating said parts for further tightening the coiled spiral.

2. In a machine of the character set forth, an arbor for taking the inner end of a spiral and a guard around said arbor for holding the outer end of the spiral, mechanical means for relatively rotating said parts to coil the spiral onthe arbor inside the guard and manually operable means for sequentially rotating said parts to further tighten the coiled spiral on the arbor.

In a machine of the character set forth, an arbor for taking the inner end of a spiral and a guard around said arbor for holding the outer end of the spiral, mechanical means for relatively rotating said parts to coil the spiral on the arbor inside the guard, manually operable means for further relatively rotating said parts to tighten the coiled spiral on the arbor, and means for relatively shifting the arbor and guard longitudinally in respect to each other to strip the spiral off the arbor.

i. In a machine of the character set forth, an arbor for taking the inner end of a spiral and a guard around the end portion of said arbor, means for. relatively rotating said parts to coil the spiral on the arbor within the guard, and means for relatively shifting the guard and arbor longitudinally in re spect to each other to strip the spiral off the end of the arbor.

5. In a machine of the character set forth, an arbor for taking the inner end of a spiral and a guard around the end portion of said arbor, means for relatively, rotating said parts to coil the, spiral on the arbor within the guard, and means for sliding the guard longitudinally over the arbor to strip the spiral off the end of the arbor.

6. In a machine of the character set forth,

an arbor for taking the inner end of a spiral,

, and a guard around the end portion of said arbor, means for relatively rotating said parts to coil the spiral on the arbor Within the gl'lard, means for'sliding the guard longitudinally over the arbor to strip the spiral oft theend ofithe arbor, andmeans for returning the guard to original position.

8. In a machine of the character set forth, an arbor for taking the inner end of a spiral, a tubular guard around the end portion of the arbor and slidingly engaged over the arbor, means for rotating the arbor in respect to the guard, means for sliding the guard longitudinally over the arbor, a pivotally supported coiling guide, and means an. arborslotted in its end portion to take the inner end of a spiral, a sleeve slidingly engaged over said arbor, a guard on said sleeve surrounding the end portion of the arbor, mechanical means for rotating the arbor, a pivotally supported coiling guide ad j acent the end or' the arbor, means for swinging said coiling guide free of the arbor, and means for sliding the guard sleeve longitudinally over the arbor.

10. In a machine of the character set forth, an arbor slotted in its end portion to take the innerend of a. spiral, a sleeve slidingly engaged over said arbor, a guard on said sleeve surrounding the end portion of the arbor, mechanical means for rotating the arbor, manually operable means for rotating the arbor, a pivotally supported coiling guide adjacent the end of the arbor, means for swinging said coiling guide free of the arbor, and means for sliding the guard sleeve longitudinally over the arbor.

11. In a machine of the character set forth, an arbor for taking the inner end or a spiral and a guard for holding the outer end of the spiral, treadle-operated means for rotating one of said parts in one direction and counterbalance means for rotating said part in the opposite direction.

12. In a machine of the character set forth, an arbor for taking the inner end of a spiral and a guard for holding the outer end of the spiral, treadle-operated means for rotating one of said parts in one direction and counterbalance means for rotating said part in the opposite direction, and a one-way driving connection between one of said means and the arbor.

13. In a machine of the character set forth, a drive shaft, means for rotating the same, an arbor, gearing between the drive shaft and arbor, manually operable means for sequentially turning the arbor and a winding guard associated with the arbor.

14. In a machine of the character set forth, a drive shaft, a double pulley loose on said shaft, a treadle connection with one side of said pulley and a counter-balance connected with the other side of said pulley,a pawl and ratchet connection from said double pulley to said shaft, an arbor having a slotted end portion to take the inner end of a spiral, gearing from the drive shaft to said arbor, a hand wheel connected with the arbor for turning the same by hand, a sleeve longitudinally slidable over the arbor, a tubular guard on said sleeve coveringvthe slotted end portion of the arbor and provided with an abutment to hold the outer end of the spiral, a coiling guide removably supported adjacent the end of the arbor, means for shifting said guide clear of the spiral wound on the arbor, and means for longitudinally shifting the sleeve over the arbor to cause the guardto strip the spiral oil? the end of the arbor.

In testimony whereof Iafiix my signature.

WILLIAM A. ZEIDLER. 

